body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #ffffff;
    font-family: Arial, sans-serif;
}

.alert {
    display: none;
    position: fixed;
    top: 10%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgb(255, 217, 122);
    padding: 0 20px;
    border: 1px solid #ccc;
    z-index: 2000;
}

#yn-alert {
    top: 50%;
    background: rgb(192, 255, 249);
    padding-bottom: 20px; /* 防止按钮紧挨下边框 */
}

.hint {
    font-size: 0.9rem;
    color: #ffc965;
}

.screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    justify-content: center; /* 主轴居中 */
    align-items: center; /* 交叉轴居中 */
    z-index: 1000;
}

.container {
    display: flex;
    flex-direction: column;
    background-color: #62ceeb;
    padding: 20px;
    border-radius: 10px; /* 圆角半径 */
    width: 80%;
    max-width: 500px;
    max-height: 80%;
}

.title {
    text-align: center;
}

.selected {
    border-color: rgb(255, 232, 102) !important;
    transform: scale(1.1); /* 放大效果 */
}

.btn {
    background-color: #68dc7f;
    border: none;
    color: white;
    padding: 15px 20px;
    text-align: center;
    font-size: 18px;
    margin: 10px auto;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #69cf7e;
}